What is Clayton Chan's specialty?

Clayton Chan (NPI 1972682037) is a Medicare-billing provider whose primary specialty is Internal Medicine in Oakland, CA.

Where does Clayton Chan practice?

Clayton Chan practices in Oakland, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1972682037.

How much does Medicare pay Clayton Chan?

Medicare Part B utilization, prescribing (Part D), MIPS quality scores, and industry payments for Clayton Chan (NPI 1972682037) are detailed on this CareTrace profile.

PROVIDER PROFILE · NPI 1972682037

Clayton Chan

PRACTICEASIAN HEALTH SERVICESSee all providers at this practice →

Internal MedicineOakland, CAI

MEDICARE UTILIZATION · PART B · 2024

No data available for this provider in 2024.

PRESCRIBING · PART D · 2024

Total Rx claims

2,504

Beneficiaries

—

Total drug cost

$164K

Distinct drugs

Brand share

11.9%

Top prescribed drugs

Atorvastatin Calcium310 claims

Amlodipine Besylate281 claims

Metformin Hcl142 claims

Lisinopril139 claims

Losartan Potassium138 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Clayton Chan's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 16 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Bradford Piatt Diagnostic Radiology · Lafayette, CA	66	119
Peter Sam Family Practice · Oakland, CA	33	74
Tammy Chen Family Practice · Oakland, CA	26	52
ASIAN NETWORK PHYSICAL THERAPY AND REHABILITATION	22	31
Kathryn Klima Diagnostic Radiology · Oakland, CA	21	33
ASIAN HEALTH SERVICES	20	33
Tyler Kang Hematology-Oncology · Walnut Creek, CA	18	89
Qingwei Yan Urology · Oakland, CA	16	29
HSU, FRANK	16	29
RICH, PHILIP	15	21
SUTTER EAST BAY HOSPITALS	13	23
Thomas Lee Podiatry · Oakland, CA	12	42

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events